Frame for grindstones.



G. G. GUY.

FRAME FOR GRINDSTONES. APPLICATION FILED SEPT-26. I914.

.2 SHEETS-SHEET I.

Patented May 22, 1917.

G. G. GUY. FRAME FOR GRINDSTONES.

I APPLICATION FILED SEPT- 26. 1914- i 1,226,969. Patented May 22, 1917.

. ,2 SHEETS-SHEET 2.

- into UNITED STATESPATENT onnrcn.

GEORGE G. GUYQO BATAv A, 'ILL NoI's, ASSIGNQR TO-AURORA noon HANGER & SPECIALTY COMPANY, or AURORA, ILLINOIS, A CORPORATION or ILLINOIS.

FRAME FOR GRINDSTONES.

To all whom it ma concern: 7

Be it known that, I, GEORGE G. GUY, a citizen of the UnitedState's, and a resident of Batavia, in the county of Kane, and State of Illinois, haveinvented certain new and usefulImprovements in Frames for Grindstones, of which the, following is a full,

- clear, and exact specification.

My invention ;1s concernedv with grindstone frames, andis designed to produce a simple frame of theclass'described-that can be manufactured very cheaply, and that is constructedso that it can be shipped in'a collapsed condition, from which it can be quickly set up with a minimum of efiort,

and, if desired, can bereadily collapsedagain for further shipment.

With these objects in view, my invention reference characters are used to designate identical partsin all the figures, of which,-

Figure 1 is a perspective view of the frame. with all the parts assembled, the stone being indicatedonly by dotted lines;

:Fig. 2 is a view of the frame collapsed, with the stone removed, in condition for shipment;

Figs. 3 and 4 are views of the splashboard' and seat, respectively, detached ;1 n

Fig. 5 is a section through the bearings and axle, on an enlarged scale;

Fig. 6 is a section through the seat;

Figs. 7 and 8 are views in section .on the lines AA and BB,' respectively, of. Fig.5;

Figs. 9 and 10 are details in section showing the connection of the lower and upper was of the side brace rods with the frame; an I Fig. 11 is a detail in section showing the connections of the treadles with the frame.

In'carrying-out my invention, I, provide two symmetrical side frames, each consistingof thefho'rizontal top portion 20 and the legs '21 and 22, thesidepiece being preferformed of a small channel bar bent the shape shown, although I contemplate the employment of angles, or even tubes,for the side pieces. These side pieces ably Specification of Ilfietters'Iatent. V

the cross piece .29 to thereof slightly turned down,

33,and havinga pair of tongues 34 stamped therefrom so: as to cooperate with the top sides 35 of the triangular supporting brackets36, which are secured by screws 37 and 38 to the legs 21 at the proper elevation,

' Patented May 22, 1917.

' I Application filed September 26,1914. Serial No. 863, 13.

are braced against having their legs spread apart longitudinally of theframe by the brace rods 28 and 24:, each: of which is hooked through a suitable aperture 25 at each end in the center of thesidelpiece.

nuts, I preferably employ the rods shown,

with the bent-over ends, as a cheaper construction. a 1

The s1de p eces are, braced from separa- "tion from eachfotherby brace bars 26 and 27, which are conveniently secured to the adjacent legs 21 and 22 by screw-headed bolts having squarenuts on the inner sides of the legs cooperating with the channels to prevent said nuts turning, so that these While 'I' might employ headed bolts and, o

screws can be readily driven without the necessity of holding the nuts. Thelower ends are similarly connected to the legs on the opposite side of the frame, and the two brace-bars at each end are preferably connected at their centers by a screw .28. When the frame is to be placed in the collapsed position shown in Fig. 2, for shipment, the lower screws are unfastened and the frame can be collapsed.

In addition to theend brace bars 26 and 27 I necessarily provide other detachable connections at 'the top of the side pieces, the first of these beingthe cross piece 29, which has a vertical body and the ends turned at 1 right angles thereto,,so that it can be se-' f cured to the tops 20 of the side pieces by screws and nuts in the same manner as described for the brace bars 26 and 27 I utilize this cross piece 29 to support the splashboard 30, which will be seen to consist of a strip of sheet metal of a suitable thickness ,7 and dimensions so that a tongue 31 stamped therefrom canbe slipped over the body of secure the splashboard removably in place, .When the frame is to be collapsed for shipment, one ofthe screws is removed, as shown in Fig. 2, and the cross piece 29 is free to be turned to permit the I approach of the upper portions of the two side pieces.

Another detachable connection is formed by th e seat 82, which preferably consists of sheet metal having the sides a piece of as indicated at hen the frame is assembled, the tongues 34 engaging the tops 35 of the brackets hold the,

seat securely in place; and when the frame is to be disassembled and the side pieces are spread apart, the seat is'released in a manner that will be readily apparent.

Another detachable connection between the two side pieces that forms a very important part of my invention is the axle l0 for the stone 71. The axle 40 has a central portion provided with ribs 41 to cooperate with the angles of the aperture 42 in the stone in the customary manner, and the ends of the central portion of this axle 40 are externally threaded by a coarse thread, as shown, so that the collars 43 can be screwed thereon so as to adjust and secure the stone in any desired position thereon, thus enabling me to center the stone perfectly in the frame. The ends of this central portion of the axle are provided with square recesses 44, which may extend entirely through the axle, and which are designed to receive the squared ends 45 of the extensions 46 of the axle. These extensions 46 have a central cylindrical portion adapted to cooperate with anti-friction rollers 47 placed between said cylindrical portion 46 and bearing brackets 48 bolted or otherwise secured on the tops 20 of the side pieces, and having cylindrical interiors adapted to receive the rollers 47 and form a roller bearing. The extensions of the axles are provided with flanges or collars 49 adapted to engage the ends of the central portion and to hold the inner ends of the anti-friction rollers 47 in place. These extensions are also provided with squared, reduced outer ends 50, upon which are se cured the hubs 51 of the crank arms 52. The extensions 46 are formed of some material such as malleable castings, so that when the cranks are fitted in place they can be swaged on and the cranks secured in place. The extensions also have apertures therethrough, and when the parts are assembled, the bolt 53 is passed through the extensions and the axle, and the nut 54: screwed thereon, so that all the parts are held in place. When it is desired to knock down the frame for shipment, all that is necessary is to remove the bolt 58, when the extensions can be drawn out from the center of the axle as the side pieces are separated, and the frame is ready to ship, with the bearings in place and prevented from any possible displacement. This is a very marked advantage in the merchandising of these frames, as any ordinary construction that permits of the loss or misplacement of the roller bearings is highly objectionable, as such loss is liable to occur during; shipment, or the misplacement to occur when the frame is beingset up by the purchaser. The ends of the cranks may be provided with any suitable connections 55 having an aperture 56 therein, through which aperture is passed the doubly curved end 57 of the connecting rods 58, which have their lower ends formed with hooks 59 adapted to catch in the loops 60 formed in the treadles 61, which treadles are preferably composed of fiat bars bent into the shape shown, with the small loops 60, the large loops 61* forming the footholds of the treadles. The ends are separated a sufiicient amount to embrace the lower ends of the legs 21, which have loops 62 struck up therefrom, so that pins 63 passed through suitable apertures in the treadles and through the loops 62 can be secured in place by the use of cotter pins 64, makinga very cheap and durable fulcrum attachment for the treadle levers.

While I have herein shown and described a novel axle and crank construction, I do not herein claim the same, but reserve it for a divisional application lVhile I have shown and described myvinvention as embodied in the form which I at present consider best adapted to carry out its purposes, it will be understood that it is capable of modification, and that I do not desire to be limited in the interpretation of the following claims except as may be necessitated by the state of the prior art.

IV hat I claim as new, and desire to secureby Letters Patent of the United States, is:

1. In a collapsible grindstone-frame, the combination with a pair of side pieces each comprising a horizontal top and two legs, of a pair of crossed brace pieces at each end forming the only connections between the legs of the side pieces pivoted to each other and each detachably secured at one end to one of the side pieces and forming the only connections between the legs of the two side pieces, and detachable connections between the tops of said side pieces, which when detached, permit the side pieces being collapsed toward each other without changing their shape.

2. In a collapsible grindstone-frame, the combinatiton with a pair of side pieces each comprising a horizontal top and two legs, of a pair of detachable brace pieces at each end, and detachable connections between the tops of the side pieces, which when detached, permit the side pieces being collapsed toward each other without changing their shape, said detachable connections including a detachable seat. 3. In a collapsible grindstone-frame, the

. combination with a pair of side pieces, of a pair of detachable brace pieces at each end, and detachable connections between the tops of the side pieces, said detachable connections including a detachable seat,consisting of a piece of sheet metal having tongues struck downward therefrom, and brackets permanently secured to the sidepieces with which the tongues cooperate.

4c. In a collapsible grindstone-frame, the combination with a pair of side pieces each comprising a horizontal top and two legs, of a pair of detachable brace pieces at each end forming the only connections between the legs of the side pieces, and detachable connections between the tops of the side pieces which when detached, permitthe side pieces being collapsed toward each other without changing their shape, said detachable connections including an axle for the stone, extensions of said. axle, bearings in the side pieces through which the extensions pass and in which they are permanently held, and a bolt for securing said extensions to the axle.

5. In a collapsible grindstone-frame, the combination with a pair of side pieces, of a pair of detachable brace pieces at each end,

and detachable connections between the tops of the side pieces, said detachable connections including a brace detachably connected at one end to the top of one side, and a splashboard having a tongue struck up therefrom cooperating with the brace to detachably secure the board thereto. 7

6. In a collapsible grindstone-frame, the combination with a pair of side pieces each comprising a horizontal top and two legs, of a pair of detachable brace pieces at each end, and detachable connections between the tops of the side pieces, which when detached, permit the side pieces being collapsed toward each other without changing their shape, said detachable connections including a detachable seat, a brace detachably connected at one end to the top of one side, a splashboard detachablyconnected to said brace, an axle for the stone, extensions of said axle, bearings in the side pieces through which the extensions pass and in which they are permanently held, and means for removably securing saidextensions to the axle.

7 In a grindstone frame, the combination with a pair of inverted U-shaped side-pieces, each made of an integral bar of metal, of connections for holding the same spaced apart, and sufficiently detachable therefrom to permit the side pieces being collapsed toward each other. V 1

8. In a grindstone frame, the combination the legs of the two side pieces, and connec tions between the tops of said side pieces, and sufliciently detachable therefrom to permit the side pieces being collapsed toward each other.

9. In a grindstone frame, the combination with a pair of invertedU-shaped side-pieces each made of an integral bar of metal, of a pair of detachable brace-pieces at each end, and detachable connections between the tops of the side pieces, said detachable connections including a detachable seat, said bracepieces, connections, and seat being detachable to permit the side pieces being collapsed toward each other.

10. In a grindstone frame, the combination with a pair of inverted U-shaped sidepieces each made of an integral-bar of metal, of a pair of detachable brace-pieces at each end, and detachable connections between the tops of the side pieces which when detached permit the side pieces being collapsed toward each other, said detachable connections including an axle for the stone, extensions'of said axle, bearings in the side pieces through which the extensions pass and in which they are permanently held, and a lpolt for securing said extensions to the ax e. 11. In a collapsible grindstone-frame, the combination with a pair of side pieces, of brace rods 23 and 24: extending through other and each adjustably apertures in the side pieces and having of September, A. D. 1914.

GEORGE G. GUY. 1 8.

Witnesses:

JOHN HOWARD MOELROY, JNo. Gr. ELLIo'm.

Copies of this patent may be obtained for five cents each, by addressing the fcommissioner of Patents, Washington, D. G. 

